Siemens | QJH23B175A02 | Circuit Breaker | 175A | 3-Pole | 240V | Bolt-On

Designed for reliability in demanding electrical environments, the Siemens QJH23B175A02 circuit breaker delivers 175A of overcurrent protection across three poles at 240V. Its bolt-on mounting provides a secure, vibration‑resistant connection, making it an ideal choice for retrofit, maintenance, and replacement projects in Siemens‑compatible panels.

Key specifications

• Amperage: 175A
• Poles: 3‑Pole
• Voltage: 240V
• Mounting: Bolt-On
• Part number: QJH23B175A02

Compatibility and installation notes: Confirm fit and ratings before ordering. The part number QJH23B175A02 is your best reference for compatibility with your panel or enclosure. Always verify that the breaker’s 3‑pole 240V configuration aligns with your three‑phase system and that the bolt‑on mounting matches your panel’s design.

What problems this solves

• Provides secure, reliable overcurrent protection for three‑phase feeders in commercial and industrial panels
• Facilitates quick, straightforward replacements in existing Siemens installations thanks to a familiar bolt‑on mounting
• Supports planned upgrades and retrofits without changing surrounding field devices, reducing downtime

Who it’s ideal for

• Electrical contractors performing panel retrofits or maintenance in Siemens‑tracked systems
• Facilities managers seeking dependable protection for 3‑phase distribution in commercial facilities
• Techs replacing failed or aging 175A, 3‑pole, 240V breakers in compatible panels

How to ensure a proper fit

• Review your panel labeling and cross‑reference with the QJH23B175A02 part number to confirm compatibility
• Verify the breaker’s amperage (175A), voltage (240V), and 3‑pole configuration matches your circuit requirements
• Ensure the mounting style is bolt‑on and compatible with your panel design
• Always power down the system and follow local codes during installation

With Siemens engineering behind it, the QJH23B175A02 circuit breaker combines trustworthy protection with practical retrofit versatility. Whether you’re upgrading an aging panel, replacing a failed unit, or equipping a new Siemens‑compatible installation, this 175A, 3‑pole, 240V bolt‑on breaker is built to deliver consistent performance and long‑term reliability.